Giuliano Enamel Gemset Brooch

A sapphire, ruby, diamond and enamel brooch by Giuliano, with a central round brilliant-cut diamond, flanked by a round faceted ruby to one side and a round faceted sapphire to the other, all gems set within a decorative scrolled openwork blue and white enamel frame, overall measurements approximately 37 x 15 mm, signed C Giuliano, circa 1860, gross weight 5.6 grams, slight restoration to enamel.